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Intel i486DX2-40
General Info
Designer	Intel
Manufacturer	Intel
Model Number	i486DX2-40
Part Number	A80486DX2-40, SB80486DX2-40
S-Spec	SX722
Introduction	March 3, 1992 (launched)
Shop	Amazon
General Specs
Family	80486
Series	486DX2
Frequency	40 MHz
Bus type	FSB
Bus speed	20 MHz
Bus rate	20 MT/s
Clock multiplier	2
Microarchitecture
Microarchitecture	80486
Core Name	486DX2
Process	1 µm, 800 nm
Technology	CMOS
Word Size	32 bit
Cores	1
Max Memory	4 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Vcore	5 V
OP Temperature	0 °C – 85 °C

i486DX2-40 was a fourth-generation x86 microprocessor introduced by Intel in 1992. This chip, which is based on the 80486 microarchitecture, had a clock doubler operating at 40 MHz, twice the bus frequency. Like the original i486DX, this chip implemented the 80387 FPU on-die and incorporated System Management Mode (SMM).

Cache

Main article: 80486 § Cache

Cache Info [Edit Values]
L1$	8 KiB 8,192 B 0.00781 MiB	1x8 KiB 4-way set associative (unified, write-through policy)

Graphics

This chip had no integrated graphics processing unit.

Features

• System Management Mode (SMM)

See also

• 80486 family